Edna "E" Mode is an eccentric who designs the costumes for many members of the superhero community. To that end, not only does she take the of the clothes into account, but also their practical uses such as protective qualities and accommodation to the powers of the wearer. She was a guest at Mr. Incredible and Elastigirl's wedding. Rick Dicker, who felt that Edna was "difficult" to work with, was the one who first referred Elastigirl to Edna. Edna's no-nonsense personality and round glasses are a direct homage to , a Hollywood costume designer. Edna Mode also appeared with to present the at the .
Edna refuses to design super suits with capes, in light of the number of supers (Dynaguy, Meta-Man, Stratogale, Thunderhead, and Splashdown) killed because their capes got caught in airliner turbines, elevators, missiles, etc.